/*
* jQuery UI Effects Fold 1.8.7
*
* Copyright 2010, AUTHORS.txt (http://jqueryui.com/about)
* Dual licensed under the MIT or GPL Version 2 licenses.
* http://jquery.org/license
*
* http://docs.jquery.com/UI/Effects/Fold
*
* Depends:
*	jquery.effects.core.js
*/
(function ($, undefined) {
    $.effects.fold = function (o) {
        return this.queue(function () {
            // Create element
            var el = $(this), props = ['position', 'top', 'left'];

            // Set options
            var mode = $.effects.setMode(el, o.options.mode || 'hide'); // Set Mode
            var size = o.options.size || 15; // Default fold size
            var horizFirst = !(!o.options.horizFirst); // Ensure a boolean value
            var duration = o.duration ? o.duration / 2 : $.fx.speeds._default / 2;

            // Adjust
            $.effects.save(el, props); el.show(); // Save & Show
            var wrapper = $.effects.createWrapper(el).css({ overflow: 'hidden' }); // Create Wrapper
            var widthFirst = ((mode == 'show') != horizFirst);
            var ref = widthFirst ? ['width', 'height'] : ['height', 'width'];
            var distance = widthFirst ? [wrapper.width(), wrapper.height()] : [wrapper.height(), wrapper.width()];
            var percent = /([0-9]+)%/.exec(size);
            if (percent) size = parseInt(percent[1], 10) / 100 * distance[mode == 'hide' ? 0 : 1];
            if (mode == 'show') wrapper.css(horizFirst ? { height: 0, width: size} : { height: size, width: 0 }); // Shift

            // Animation
            var animation1 = {}, animation2 = {};
            animation1[ref[0]] = mode == 'show' ? distance[0] : size;
            animation2[ref[1]] = mode == 'show' ? distance[1] : 0;

            // Animate
            wrapper.animate(animation1, duration, o.options.easing)
		.animate(animation2, duration, o.options.easing, function () {
		    if (mode == 'hide') el.hide(); // Hide
		    $.effects.restore(el, props); $.effects.removeWrapper(el); // Restore
		    if (o.callback) o.callback.apply(el[0], arguments); // Callback
		    el.dequeue();
		});
        });
    };
})(jQuery);